from fastapi import APIRouter
from app.models.article_quiz import ArticleQuizRequest, ArticleQuizResponse
from app.graphs.article_quiz_graph import ArticleQuizAgent
import logging

logger = logging.getLogger(__name__)
router = APIRouter(prefix="/api/v1", tags=["article_quiz"])

_agent = None


def get_agent() -> ArticleQuizAgent:
    global _agent
    if _agent is None:
        _agent = ArticleQuizAgent()
    return _agent


@router.post("/article/quiz/generate", response_model=ArticleQuizResponse)
async def generate_article_quiz(req: ArticleQuizRequest):
    agent = get_agent()
    result = await agent.run(req.article_title, req.article_content, req.profile_summary)
    return ArticleQuizResponse(questions=result.get("questions", []),
                               fallback_used=result.get("fallback_used", True))